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Part# 11-12976
MFR Model# 01-0771833-10


FAA-PMA Approved
Parmetheus Plus PAR36 LED lights are a drop-in replacement for outdated Halogen PMA Approved. Lightweight, low-current and moisture resistant, they provide stable light output for thousands of operating hours. These LED lights are 40% brighter output than the original Parmetheus Series assemblies.

LED lighting is the ideal technology for aviation applications. Whelen LED lights are time and field-tested for reliability and long-life performance under the tough conditions required by Fire, Emergency, DOT and Law Enforcement professionals around the world.

California Prop 65 Warning Symbol

WARNING: This product can expose you to chemicals including Methylene Chloride, which is known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to


  • Direct replacement for outdated PAR36 Halogen and HID lamps.
  • First commercially available PAR36 LED for Aviation applications.
  • 10,000 hour operating life.
  • Available in Landing and Taxi versions.
  • Convenient “Drop In” design for ease of installation:
  • Power wiring attaches to brass screw terminals; Weight is virtually identical to previous PAR36 lamps; Assembly design includes clocking notch
  • Polycarbonate, replaceable, hard-coated outer lens.
  • Metal, heat dissipating coated housing.
  • Whelen TIR™ (Total Internal Reflector) technology rivals strobe in intensity and effectiveness.
  • Proudly designed and manufactured in the USA.
  • Five year warranty.


  • Model: P36P1L
  • Type: Landing (Spot Light, 10 degree)
  • Amps: 1.2
  • Volts: 14 VDC
  • Size: 4.38" Round x 1.75" Face to Screw terminal
  • Accessories
  • Customers Also Viewed
  • Frequently Purchased With


Replaced the original incandescent bulb on my Cherokee 180. Easy swap, easily 2x more light and the bright white color illuminated better than the soft yellow of the incandescent.

December 8, 2020

I had one problem. On the install of this item. The bulb I was replacing was a filament type where the polarity was not significant. The first hookup, the LED bulb did not light up. I reversed the wiring and it lit up. So I marked the bulb, with a marker, with Pos and Neg for future replacements.

Darryl &
October 14, 2020


Robert H
September 29, 2020

Very bright, and a much smaller power draw than the GE4509. Install was very easy in an AA-5. The fit is a little tight in the retaining ring with the silicone gasket, but a very light application of silicone lubricant allowed a tight fitment and seal in the retaining ring.

Roger R
September 28, 2020

What a difference this Led light makes. Very happy with it if you don’t have one you should get one.

July 1, 2020

Exactly as advertised. Bolted right in with no fuss. Much brighter than the 4509 it replaced with a fraction of the current consumption.

Laura H
June 8, 2020

Very Bright. No radio noise. Great product.

Michael A
May 8, 2020

Excellent light! We just installed it in my Cessna 185, together with the taxi light, and theyre super bright! Also compliments on your super speedy delivery!

Lambert D
April 30, 2020

Works well and is very bright. Easy install.

Rodrick S
April 17, 2020

Excellent product. Dropped right in the my C172N

Bruce A
March 19, 2020


Q: Can you confirm that this is Whelen P/N P36P1L?

Part number 11-08294 is Whelen Part number PLED1L. Part number 11-12976 is Whelen Part number P36P1L.

Q: So, if the Parmetheus Plus is 40% brighter, then that means its 4,200 lumen?

Per Whelen: This is actually measured in candlepower. The Parmetheus Plus would have 60,000 candlepower.

Q: What is the warranty on the Whelen Parmetheus Plus landing light?

This has a 5 year warranty that will cover all manufacture electronic defects.

Q: What is the difference between the Whelen Parmetheus Plus taxi and landing version of this light?

The landing light will have a 10 degree spot light and the taxi light will have a 40 degree spreader optic.

Q: Is the Whelen Parmetheus Plus LED bulb capable of pulse mode?

This unit alone does NOT have a pulse mode option. An aftermarket pulse system would need to be installed on the aircraft to put the light into pulse mode.

Q: Does this Whelen Parmetheus Plus LED landing light have an STC, and is the stc included? Or how I can get the stc?

Whelen does have an STC, but it is not included in the box. The STC can be viewed on the Whelen web site, .

Q: I see the Whelen Parmetheus LED is a direct replacement for my GE4509 landing light in my C170A. Can it be installed by the pilot/owner with only a log book entry or due to the fact there is an STC involved this would require an AMO to sign off?

This is just a replacement lamp, that the aircraft owner should be able to replace with a log book entry, but we always recommend you consult with your A&P to verify there are no other requirements.

Q: Would the Whelen Parmetheus Plus P36P1L bulb replace the GE4509? I have 1975 172m model.

Yes, the GE4509 is a 14v Par 36 bulb. This is also a 14v Par 36 bulb and will be a direct replacement.

Q: How bright is this Whelen Parmetheus Plus LED landing light?

PER THE MFG. - Replaces GE 250 watt lamps. 1500+ lumens

Q: Which terminal is positive and negative on the Whelen Parmetheus Plus LED landing light?

As viewed from the rear of the light, the terminal on the left is ground and the right terminal is positive. The polarity is also shown on the part number label affixed to the light.

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